Eggs vs sweet potatoe proteins
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Here's a direct comparison of the protein profiles of eggs vs sweet potatoes:
🥚 Eggs vs 🍠 Sweet Potato — Protein Comparison
Protein Quantity (per 100g)
| Egg (whole, raw) | Sweet Potato (raw) | |
|---|---|---|
| Protein | ~12.6 g | ~1.6 g |
| Calories | ~155 kcal | ~86 kcal |
| Protein % of calories | ~33% | ~7% |
Eggs contain ~8× more protein per 100g than sweet potatoes.
Protein Quality
Eggs are the gold standard for protein quality:
- PDCAAS (Protein Digestibility-Corrected Amino Acid Score): 1.0 (maximum)
- DIAAS (Digestible Indispensable Amino Acid Score): ~113 — one of the highest of any food
- Complete protein — contains all 9 essential amino acids in ideal ratios
- Highly bioavailable (~91% digestibility cooked)
- Rich in leucine, which is critical for muscle protein synthesis
Sweet Potatoes are a carbohydrate-dominant food:
- Protein is incomplete — low in some essential amino acids, particularly methionine and certain sulfur-containing amino acids
- Lower bioavailability compared to animal proteins
- However, they do provide modest amounts of lysine, which many plant foods lack
Essential Amino Acid Comparison (approximate, per 100g)
| Amino Acid | Egg | Sweet Potato |
|---|---|---|
| Leucine | 1,086 mg | 86 mg |
| Lysine | 914 mg | 71 mg |
| Methionine | 392 mg | 28 mg |
| Tryptophan | 167 mg | 25 mg |
| Valine | 858 mg | 87 mg |
What Sweet Potato Does Offer
While sweet potato isn't a protein food, it brings other nutritional value:
- High in complex carbohydrates and dietary fiber
- Excellent source of beta-carotene (provitamin A)
- Good amounts of vitamin C, potassium, B6
- Low glycemic index relative to white potato
- Antioxidant compounds
Summary
| Eggs | Sweet Potato | |
|---|---|---|
| Protein source? | ✅ Yes (primary) | ❌ No (incidental) |
| Complete protein? | ✅ Yes | ❌ No |
| Protein quality | ⭐⭐⭐⭐⭐ | ⭐⭐ |
| Best nutritional role | Protein, healthy fats | Carbohydrates, micronutrients |
Bottom line: These two foods serve different nutritional roles. If your goal is protein intake, eggs are far superior. Sweet potatoes are better thought of as a quality carbohydrate source. They complement each other well in a balanced meal.
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